From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Page detailing the production cost of a contact breaker and distributor, and experiments on materials for contact points.
| Identifier | ExFiles\Box 50\1\ Scan029 | |
| Date | 1st July 1922 guessed | |
| -5- Contd. Contact breaker and distributor. Present cost of production £15.17.4 Contact points (X.1818). Present cost of platinum contact points. Experiments with Tungsten points in progress and platinum points with reduced amount of platinum are under consideration. Contd. | ||